Oregon 6 HR MTB
Mudslinger Events
Aug 9, 2025
Monroe, OR
Mountain Bike
About
Conquer Alsea Falls in a thrilling 6-hour mountain bike challenge!
The Oregon 6 HR MTB at Alsea Falls is a unique endurance relay where solo riders or teams of two push their limits to complete as many laps as possible in six hours. Set in the scenic landscapes of Alsea Falls near Monroe, Oregon, this race delivers an action-packed day filled with camaraderie, technical trails, and a festival-like atmosphere. Whether you’re racing solo or sharing the stoke with a teammate, the challenging course rewards grit and mountain bike prowess.
COURSE DETAILS
The race begins with a 10-mile opening lap featuring 1,800 feet of climbing, followed by a 7-mile loop with 950 feet of elevation gain per lap. The course combines flowing singletrack, fast doubletrack, and a paved climb, winding through lush forests and technical sections.
Race HIGHLIGHTS
- 6-hour endurance mountain bike relay for solo riders and teams
- Scenic and challenging course at Alsea Falls Recreation Site
- Unique opening lap with extra mileage and elevation
- Technical trails and fast descents through old-growth forest
- Festival atmosphere with food, music, and post-race awards
RIDE TYPES

Race overview
First lap: 10 miles | Subsequent laps: 7 miles per lap
Alsea Falls sits at ~570 ft elevation / First lap: 1,800 ft gain; Each additional lap: 950 ft gain
Mixed singletrack, doubletrack, and paved climb; forested and technical with flowy sections